Republican Mo Brooks of Alabama said Monday that he would vie for the state's open U.S. Senate seat in 2022.  Incumbent Richard Shelby (R) is retiring after six terms.

This is the second Senate run for Brooks. He finished third in the GOP primary for the 2017 special election, earning 20% of the vote. Due to the timing of that election, Brooks was able to defend his House seat in 2018.

Brooks, a strong supporter of Donald Trump, will be leaving the House after six terms. He represents the very conservative 5th district, which runs across the northern border of the state, including Huntsville. Brooks had no Democratic challenger in 2020; Donald Trump won the district by 27% over Joe Biden.  

He is the sixth member to retire this cycle; four of those announcements have come since Sunday.